A normal sperm percentage of 2% means that it is considered abnormal. Under normal circumstances, a normal sperm percentage > 4% is considered normal. A normal sperm percentage of 2%, which means that the malformation rate of sperm is relatively high and the quality of sperm decreases, may cause a decrease in male fertility and even lead to infertility. There are many reasons for 2% normal sperm, such as malnutrition, lack of vitamins, lack of trace elements, as well as infections in the urinary system, varicocele, and stimulation of the external chemical environment. If you have 2% normal sperm, you should go to the urology department of the regular hospital as soon as possible for further examination to clarify the cause of the disease and actively treat it.